[Theme: Lightword] Changing sidebar width

Hi guys, this has been discussed in the following post but there was never an answer:
http://ww.wp.xz.cn/support/topic/increase-the-width-of-the-sidebar-in-lightword-theme

I wanted to use the “wide” option in the Lightword template, but I wanted to make the sidebar wider as well (meaning, for it to take up more space). I noticed that the theme uses background images, so I’m not sure if this has anything to do with my inability to change the width.

I messed with the width settings in the content tags of the stylesheet.css, but all it does is hide the widgets in the sidebar (without moving them to the left).

Was wondering if someone could point me in the right direction. My site is http://www.nokturnalist.com.